You can participate in two separate chats April 18 with IZOD IndyCar Series drivers Ryan Hunter-Reay and Charlie Kimball in advance of the 39th Toyota Grand Prix of Long Beach.

Hunter-Reay, the reigning series champion who won the Honda Indy Grand Prix of Alabama at Barber Motorsports Park on April 7 in the No. 1 DHL car for Andretti Autosport, will participate in a Twitter chat at 2 p.m. (ET) via #APIndyCar. Send in your questions in advance.

Kimball, driver of the No. 83 Novo Nordisk Chip Ganassi Racing car who qualified a career-high fifth and finished fourth at Barber Motorsports Park, will participate in a Los Angeles Daily News chat at 3 p.m. (ET). CLICK HERE to chat.